Master Bomber Dessau, March 7, 1945 ORB entry: "R/T Bulk?"

"We called the Recce Mosquito at 21.41 hrs but received no reply. We contacted the DMB at 21.45 hrs but he had received no message from the Mosquito and called the R/T Bulk, but heard nothing in reply."

Do I have this correct as R/T Bulk or is it R/T Hulk or B/T Bulk or Hulk? And...what does that term mean?

Edit: I wonder if this might have something to do with broadcasting simultaneously over a range of frequencies? Did this R/T equipment have that capability?

Jim

Last edited by JDCAVE; 7th December 2019 at 20:27.
Reason: Added question